60+40-20+100=?
20 × 20
40 × 40
60 × 60
80 × 80
100 × 100
20 x 20 = 400
40 x 40 = 1 600
60 x 60 = 3 600
80 x 80 = 6 400
100 x 100 = 10 000
ủng hộ mk nhé
lần lượt kết quả là:
400
1600
3600
6400
10000
20 × 20
40 × 40
60 × 60
80 × 80
100 × 100
20 × 20=400
40 × 40=1600
60 × 60 =3600
80 × 80=6400
100 × 100=10000
20 × 20 = 400
40 × 40 = 1600
60 × 60 = 3600
80 × 80 = 6400
100 × 100 = 10000
chúc bạn học tốt
Tính giá trị của biểu thức:
a) 90 – ( 30 – 20) = ..........................
= ..........................
90 – 30 – 20 = ..........................
= ..........................
b) 100 – (60 + 10) = ..........................
= ..........................
100 - 60 + 10 = ..........................
= ..........................
c) 135 – (30 + 5) = ..........................
= ..........................
135 – 30 – 5 = ..........................
= ..........................
d) 70 + (40 – 10) = ..........................
= ..........................
70 + 40 – 10 = ..........................
= ..........................
a) 90 – ( 30 – 20) = 90 – 10
= 80
90 – 30 – 20 = 60 - 20
= 40
b) 100 – (60 + 10) = 100 – 70
= 30
100 - 60 + 10 = 40 + 10
= 50
c) 135 – (30 + 5) = 135 – 35
= 100
135 – 30 – 5 = 105 – 5
= 100
d) 70 + (40 – 10) = 70 + 30
= 100
70 + 40 – 10 = 110 -10
= 100
nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
Tính nhẩm:
Mẫu: 100 – 20 = ?
10 chục – 2 chục = 8 chục
100 – 20 = 80
100 – 60 = …..
100 – 90 = …..
100 – 30 = …..
100 – 40 = …..
Phương pháp giải:
- Trừ theo số chục để tìm kết quả rồi điền số thích hợp vào chỗ trống.
Lời giải chi tiết:
100 – 60 = ?
10 chục – 6 chục = 4 chục
100 – 60 = 40
Tương tự :
100 – 30 = 70
100 – 90 = 10
100 – 40 = 60
20 + 40 + 60 + 80 + 100 + 120 =
20 + 40 + 60 + 80 + 100 + 120 = 420
k mk , mk k lai
TÍNH:
40+1230=....... 67478+9076=...............
1230+40=........ 9076+67478=...............
TÍNH NHANH
10+20+30+40+50+60+70+80+90+100
=...................................................
=...................................................
=................................................
Tính nhanh:
\(10+20+30+40+50+60+70+80+90+100\)
\(=\left(10+90\right)+\left(20+80\right)+\left(30+70\right)+\left(60+40\right)+50+100\)
\(=100+100+100+100+150\)
\(=550\)
Tính:
40 + 1 230 = 1 270
1 230 + 40 = 1 270
67 478 + 9 076 = 76 554
9 076 + 67 478 = 76 554
Tính nhanh:
10 + 20 + 30 + 40 + 50 + 60 + 70 + 80 + 90 + 100
= (10 + 90) + (20 + 80) + (30 + 70) + (40 + 60) + (100 + 50)
= 100 + 100 + 100 + 100 + 150
= 100 \(\times\) 4 + 150
= 400 + 150
= 550
30 + 70 + 20 + 80 + 100 + 50 + 50 + 40 + 60 =?
30 + 70 + 20 + 80 + 100 + 50 + 50 + 40 + 60
= 100 + 100 + 100 + 100 + 100
= 100 x 5
= 500
đ/s : 500
30 + 70 + 20 + 80 + 100 + 50 + 50 + 40 + 60
= (30 + 70) + (20 + 80) + (50 + 50) + (40 + 60) + 100
= 100 + 100 + 100 + 100 +100
= 100 . 5
= 500
ai k mk mk k lại
Ok!
10+20+30+40+50+60+70+80+90+100=???????????????????????????????????????????
10 + 20 + 30 + 40 + 50 + 60 + 70 + 80 + 90 + 100 = 550
Chúc bạn học tốt nhé !
10+20+30+40+50+60+70+80+90+100=(10+90)+(20+80)+(30+70)+(40+60)+50+100=100+100+100+100+50+100=(100+100+100+100+100)+50=500+50=550
10+20+30+40+50+60+70+80+90+100=
=10+90+20+80+30+70+40+60+50+100
=100+100+100+100+50+100
=550
10 + 20 + 30 + 40 + 50 + 60+ 70 + 80 + 90 + 100 = 550